Keith Wilder, the lead singer of Heatwave, died in his sleep on Sunday at the age of 65.

Billy Jones, Wilder’s cousin and band mate, confirmed the news. Wilder had been struggling with health problems lately before passing away this weekend, and he will be sorely missed.

The funk bank Heatwave was known for such 70’s hits as “Always and Forever,” “Boogie Nights” and “The Groove Line.” They were nominated for two Grammys, though they never won, and “Always and Forever” went platinum. “Boogie Nights” also broke the Top Ten for the group.

We at theGrio extend our deepest condolences to the friends and family of Keith Wilder.